19 lines
412 B
VHDL
19 lines
412 B
VHDL
// This file is part of www.nand2tetris.org
|
|
// and the book "The Elements of Computing Systems"
|
|
// by Nisan and Schocken, MIT Press.
|
|
// File name: projects/02/HalfAdder.hdl
|
|
|
|
/**
|
|
* Computes the sum of two bits.
|
|
*/
|
|
|
|
CHIP HalfAdder {
|
|
IN a, b; // 1-bit inputs
|
|
OUT sum, // Right bit of a + b
|
|
carry; // Left bit of a + b
|
|
|
|
PARTS:
|
|
Xor(a=a, b=b, out=sum);
|
|
And(a=a, b=b, out=carry);
|
|
}
|